Improvement in cultivators



D. MGNABB.

. Wheel-Cultivator.

No. 45,730.' vlmend Jan. s. 1865.

rl. PETERS. PHOTO-LITHGGHAPHER. wAsmNGTON. D C.

UNITED STATES DANIEL MGNABE, oE

PATENT OFFICE.

MOSUOIV, MICHIGAN.

IMPROVEMENT IN CULTIVATORS.

Specitication forming part of Letters Patent No. 45,730. dated January 3, 1865.

To all whom fit may concern:

Beit known thatI, DANIEL MCNAEB, ofMoscow, Hillsdale county, and State of Michigan, have invented a new and useful Improvement in Seed-Drills and Gultivators; and Ido hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters ot` reference marked thereon.

The nature of my invention consists in so constructing and arranging the drill or cultivator tooth and the parts connected therewith that it will pass any obstruction which may lie in its path, with facility and without injury to the machine.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

In the drawings, Figure l represents a top view ot' the machine. Fig. 2 represents a vertical longitudinal section, and Fig.3 a view of the back end.

The same letters refer to the same pai ts of the machine in the dift'eient figures.

A is the frame; B, the wheels; I), a crosspiece of timber securely fastened upon the top ot' the frame. This cross-piece is cut awayon the under side, as seen in Fig. 3.

C is the axle ot' the Inaehine.

E represents the drillor cultivator tooth,with a loop, I, on the top outer edge, from v'which the tooth is suspended by a strap or chain which passes over hooks on the top of the cross-piece D. The stxap has a number of holes to allow the tooth to be raised orlowered by using a different hole in the strap or link in the chain. To the inner side of the tooth (as it stands in the machine) is attached a plate or a rod of iron, and which forms a part of the tooth. This plate or rod is curved, and when the drill or eultivator is in motion it bears against the axle or against a cross-piece which may be provided for it.

0 is a wing attached to the lower partof the tooth and projecting inward.

c is a bar attached to the wing o at 4h by a loose joint, and is loosely attached to the crossbarf at the other end. lhe bar c at this end is attached by a crotch-connection, and has a double bearing for the purpose of steadying the tooth, as seen in Itig. 1.

Vhen the drill or cnltivator is in motion and the tooth is obstructed by a stoneorotherwise the curved portion ot the tooth is bearing against the axle or other cross-piece provided forit, and the form ofthe curve and the position ot' the tooth in relation to the point of said bearing will determine the amount of resistance which it may overcome without being raised out of the ground, the tooth being lowered or raised as occasion requires.

g is a roller attached to the tooth, and which follows it to cover the seed .when used as a drill. When so used the seed-box is placed upon the frame atA A, behind the cross-piece D, with the pliable tubes for conducting the seed into the hollow teeth in the usual manner. When used as a cultivator both the roller and seed-box are removed, it' desirable.

What I claim as my invention, and desire t0 secure by Letters Patent, is

Constructing a cultivator or drill tooth with an upper curved portion, which curved part shall have a bearing against some rigid portion ot' the machine when it is in motion, so that the form ot' such curved portion of the tooth and the position of the tooth shall determine the amount of resistance which it may overcome without its being raised from the ground..

DANIEL MCNABB.

Witnesses:

H. N. ROWLEY, DANIEL Row/LEY. 

